Contact Problem at Funnel-Shaped Component

Tips & Tricks

Contact solids can be created between two flat surfaces or between two cylindrical shells. However, if the area of the contact problem is a bit more complicated, it is necessary either to simplify the system so that the requirements of a contact solid can be met, or go back to the “old” modeling style using a rod model.

In the case of a funnel-shaped component, it is possible to use a polygonal contact solid layout (A), for example. However, it would result in the incorrect secondary effect of stress peaks at corner points. When modeling using members (B), these should be arranged at each FE mesh point and the cross‑section should correspond to the FE mesh width approximately. You can implement the failure criterion by the member type (for example compression member) or by means of nonlinear member releases.

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Keywords

contact solids

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RFEM Main Program
RFEM 5.xx

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Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements